Can't play R-Type Dimensions JP version!

I do buy lot's of games from Japanese PSN like PS1 games and PS2. I like R Type series a lot and i wasn't aware that they had released R-Type Dimensions on November 21, 2013 for PSN Japan store. I bought it last night it was 1000 yen but Iam only being able to download the first file which to unlock the game and size is 5.9KB. I tried re-downloading it again and still no other file to download and only 5.9KB file. Any idea why? As I know so far the PS3 games aren't region locked. Thanks for any help.

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